add get_test_path function from simd_signal's util.py

diff --git a/src/nmutil/get_test_path.py b/src/nmutil/get_test_path.py
new file mode 100644 (file)
index 0000000..ea302b4
--- /dev/null
+++ b/src/nmutil/get_test_path.py
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: LGPL-3-or-later
+# See Notices.txt for copyright information
+
+from os import PathLike
+from typing import Dict, Tuple, Union
+import unittest
+import weakref
+from pathlib import Path
+
+
+class RunCounter:
+    __run_counts: Dict[str, int]
+
+    def __init__(self) -> None:
+        self.__run_counts = {}
+
+    def next(self, k: str) -> int:
+        retval = self.__run_counts.get(k, 0)
+        self.__run_counts[k] = retval + 1
+        return retval
+
+    __RUN_COUNTERS: Dict[int, Tuple[weakref.ref, "RunCounter"]] = {}
+
+    @staticmethod
+    def get(obj: object) -> "RunCounter":
+        k = id(obj)
+        t = RunCounter.__RUN_COUNTERS
+        try:
+            return t[k][1]
+        except KeyError:
+            retval = RunCounter()
+
+            def on_finalize(obj):
+                del t[k]
+            t[k] = weakref.ref(obj, on_finalize), retval
+            return retval
+
+
+_StrPath = Union[str, PathLike]
+
+
+def get_test_path(test_case: unittest.TestCase, base_path: _StrPath) -> Path:
+    count = RunCounter.get(test_case).next(test_case.id())
+    return Path(base_path) / test_case.id() / str(count)